Alfeed hall



(No Model.)

A, HALL. Terra Cotta Kiln. No. 230,479.

Patented July 27,1880.

INVENTOR WITNESSES ATTORNEYS.

N. PETERS, FHOT0 LITHDGRAPHEIL \VASHINGTOM D c.

UNITED STATES PATENT OFFICE.

ALFRED HALL, OF PERTH AMBOY, NEW JERSEY.

TERRA-GOTTA KILN.

SPECIFICATION forming part of Letters Patent No. 230,479, dated July 27,1880.

A plication filed June 15, 1880. (No model.)

To all whom it may concern Be it known that I, ALFRED HALL, of PerthAmboy, in the county of Middlesex and State of New Jersey, have inventednew and useful Improvements in Terra-Gotta Kilns, of which the followingis a specification.

Figure 1 is a front elevation of the improvement, shown as applied to akiln. Fig. 2 is a sectional plan view of the forward part of the kiln.Fig. 3 is a sectional elevation of the door.

Similar letters of reference indicate corresponding parts.

The object of this invention is to construct the doors of kilns forburning terra-cotta in such a way that the heat will be distributedequally through the door and the other parts of the kiln so that allparts of the kiln will have a uniform temperature, and all the articleswill be burned evenly.

The invention consists in constructing a door'for terra-cotta kilns withflues in its inner part com municatin with and forming continuations ofthe ordinary lines in the kilnwall, and connected with the furnaces byfines, whereby auniiorm distribution of heat all around the kiln will beeffected, and all the articles in the kiln will be burned evenly, aswill be hereinafter fully described.

A represents the furnace-doors, B the ashpits, and O the door'of thekiln D. To the side parts of the door-frame are attach ed plates E,which project at the sides of the door, and have eyes formed in theirouter ends to receive pins F. The pins F also pass through holes in theends of the U bars or clevises Gr, between which ends the eyes of theplates E are placed. The bends of the bars Gr pass through eyes formedupon the ends of the bands H, passed around the kiln D to strengthen it.

Upon the inner ends of the plates E are formed eyes to receive the pinsK, which pins ends of the bars M, which cross the door 0, i

and have a longitudinal slot formed through them to receive a lever, sothat they can be turned to draw the screws L inward and firmly clamp thedoor 0 in place. With this construction the door 0 can be removed byremoving the pins K, the screws L, and. the bars M.

In the inner part of the door 0 are formed flues I, which, when the dooris closed, communicate with and form continuations of the ordinary fluesJ in the inner parts of the kilnwalls. With this construction the innerpart of the door and the inner wall of the kiln will be heateduniformly, so that there will be no 0001 part of thekiln, and all theterracotta articles will be burned evenly.

The products of combustion from the furnaces A are introduced into theflues I of the door 0 through flues a in the same manner as they areintroduced into the fines J in the inner wall of the kiln, so that theheat will be distributed evenly all around the kiln.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- A door for terra-cotta kilns, constructedsubstantially as herein shown and described, made with flues I in itsinner part, communicatin g with and forming continuations of theordinary flues J in the kiln-wall, and connected with the furnaces bythe flues 61., whereby a uniform distribution of heat all around thekiln will be effected, and the articles will be burned evenly, as setforth.

ALFRED HALL.

Witnesses L d O. SEDGWIGK, J. H. SCARBOROUGH.

